What do you imagine will be the biggest challenges that the world will face in 20 years? Energy or food scarcity? Overpopulation? What about our biggest triumphs? Cures for cancer and extended lifespans? Smarter humans? Well, these would all sound similar to the people of 1980 when they looked 20 years into the future… »11/06/14 1:56pm 11/06/14 1:56pm